commit 51af8170aa83307f898343de499f6fe29e67ce2e
author Leszek Swirski <leszeks@chromium.org> Fri Dec 10 14:56:05 2021
committer Lutz Vahl <vahl@chromium.org> Fri Dec 10 16:35:50 2021
tree 62d0cc568be44cfe487cfdf53597c993dff93a53
parent e218afa8473132b56a9e1532be7920dd130aeb7e

Merge: [compiler] Don't elide ChangeTaggedToInt32->ChangeInt31ToTaggedSigned

Bug: chromium:1278387
Change-Id: If834ee2f9ba3663822a8066fbd1ece49c24023da
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3329790
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78337}
(cherry picked from commit 4fae8b16802a416fe3aab0e7792fabe96cf1ecd8)
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3329794
Reviewed-by: Lutz Vahl <vahl@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>

src/compiler/simplified-operator-reducer.cc

diff --git a/src/compiler/simplified-operator-reducer.cc b/src/compiler/simplified-operator-reducer.cc
index ea9e9f4..33edd66 100644
--- a/src/compiler/simplified-operator-reducer.cc
+++ b/src/compiler/simplified-operator-reducer.cc
@@ -77,7 +77,7 @@
     case IrOpcode::kChangeInt32ToTagged: {
       Int32Matcher m(node->InputAt(0));
       if (m.HasResolvedValue()) return ReplaceNumber(m.ResolvedValue());
-      if (m.IsChangeTaggedToInt32() || m.IsChangeTaggedSignedToInt32()) {
+      if (m.IsChangeTaggedSignedToInt32()) {
         return Replace(m.InputAt(0));
       }
       break;